The sun is the star in which Earth and the other planets in the solar system orbit.
There is little to define the end of the sun. Not much but gas would exist there
from the word itself sun and sand its nature
The mass of ice and dust orbiting the sun.
The Sun
The average distance from the sun to Earth, our home planet
A year is the orbital period of the Earth moving in its orbit around the Sun
The average distance from the sun to Earth, our home planet
* Planetology * world building # Start big and work out the details based on established properties. # Chose a star type for the sun # Chose an orbit for the type of sun-star that will give you the properties you are looking for. # Chose the moon and all rotational periods from orbital mechanics. # Chose the composition of your planet # Chose the mass of your planet # Define the iron core and magnetosphere # Define the mantle and tectonics # Define the atomsphere, hydrosphere and lithosphere # Define the basis Bio-chemistry # Define the chemical and physiological Kingdoms # Define physiological phylums # Define your major plants and animals (you can't do them all) # Define your natives and their cultures
There is a very simple reason why the sun is not seen at night. The following argument is presented in all seriousness: What are the definitions of "day" and "night" ? They are, respectively, the period of time when the sun is up, and the period of time when the sun is not up. The sun is not seen in the night, simply because we define "night" to be the time when the sun is not seen. We don't define day and night in terms of the moon, since its influence on our ability to get around and pursue our activities is relatively negligible.
# photosphere: the innermost layer of the sun's atmosphere that gives off visible light. # chromosphere: the middle layer of the sun's atmosphere. # corona: The outermost layer of the sun's atmosphere that extends into space.
Define "normal" - it varies from a few years to many centuries.
That shape is called an elipse.